//
// Copyright (c) 2004-2024 Jaroslaw Kowalski <jaak@jkowalski.net>, Kim Christensen, Julian Verdurmen
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// * Neither the name of Jaroslaw Kowalski nor the names of its
//   contributors may be used to endorse or promote products derived from this
//   software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
//

namespace NLog.Targets
{
    using System;
    using System.Globalization;
    using System.Reflection;
    using NLog.Config;
    using NLog.Internal;
    using NLog.Layouts;

    /// <summary>
    /// Information about object-property for the database-connection-object
    /// </summary>
    [NLogConfigurationItem]
    public class DatabaseObjectPropertyInfo
    {
        private readonly ValueTypeLayoutInfo _layoutInfo = new ValueTypeLayoutInfo();

        /// <summary>
        /// Initializes a new instance of the <see cref="DatabaseObjectPropertyInfo"/> class.
        /// </summary>
        public DatabaseObjectPropertyInfo()
        {
        }

        /// <summary>
        /// Gets or sets the name for the object-property
        /// </summary>
        /// <docgen category='Connection Options' order='10' />
        [RequiredParameter]
        public string Name { get; set; }

        /// <summary>
        /// Gets or sets the value to assign on the object-property
        /// </summary>
        /// <docgen category='Connection Options' order='10' />
        [RequiredParameter]
        public Layout Layout { get => _layoutInfo.Layout; set => _layoutInfo.Layout = value; }

        /// <summary>
        /// Gets or sets the type of the object-property
        /// </summary>
        /// <docgen category='Connection Options' order='10' />
        public Type PropertyType { get => _layoutInfo.ValueType ?? typeof(string); set => _layoutInfo.ValueType = value; }

        /// <summary>
        /// Gets or sets convert format of the property value
        /// </summary>
        /// <docgen category='Connection Options' order='8' />
        public string Format { get => _layoutInfo.ValueParseFormat; set => _layoutInfo.ValueParseFormat = value; }

        /// <summary>
        /// Gets or sets the culture used for parsing property string-value for type-conversion
        /// </summary>
        /// <docgen category='Connection Options' order='9' />
        public CultureInfo Culture { get => _layoutInfo.ValueParseCulture; set => _layoutInfo.ValueParseCulture = value; }

        /// <summary>
        /// Render Result Value
        /// </summary>
        /// <param name="logEvent">Log event for rendering</param>
        /// <returns>Result value when available, else fallback to defaultValue</returns>
        public object RenderValue(LogEventInfo logEvent) => _layoutInfo.RenderValue(logEvent);

        internal bool SetPropertyValue(object dbObject, object propertyValue)
        {
            var dbConnectionType = dbObject.GetType();
            var propertySetterCache = _propertySetter;
            if (!propertySetterCache.Equals(Name, dbConnectionType))
            {
                var propertyInfo = dbConnectionType.GetProperty(Name);
                var propertySetter = propertyInfo.CreatePropertySetter();
                propertySetterCache = new PropertySetterCacheItem(Name, dbConnectionType, propertySetter);
                _propertySetter = propertySetterCache;
            }

            if (propertySetterCache.PropertySetter != null)
            {
                propertySetterCache.PropertySetter.Invoke(dbObject, propertyValue);
                return true;
            }

            return false;
        }

        private struct PropertySetterCacheItem
        {
            public string PropertyName { get; }
            public Type ObjectType { get; }
            public Action<object, object> PropertySetter { get; }

            public PropertySetterCacheItem(string propertyName, Type objectType, Action<object, object> propertySetter)
            {
                PropertyName = propertyName;
                ObjectType = objectType;
                PropertySetter = propertySetter;
            }

            public bool Equals(string propertyName, Type objectType)
            {
                return PropertyName == propertyName && ObjectType == objectType;
            }
        }

        PropertySetterCacheItem _propertySetter;
    }
}
